Folding scaffold.



F. ANDERSON.

FOLDING SCAFFOLD.

APPLICATION FILED APR. a. 1013.

1,1 14,956. Patented Oct. 27, 1914.

FRANKANDERSON, OF NEW. YORK, N. Y.

FOLDING scarronn.

Specification of Letters Patent.

PatentedOct. 27,1914.

Application filed April 8, 1913. Serial No. 759,691.

To all whom it may concern:

Be it known that I, FRANK ANDERsON, a subject of the King of Sweden, residing at New York city, in the county of New York and State of New York, have invented new and useful Improvements in Folding Scaffolds, of which the following is a specification.

The general object of the invention is to refine the construction of window scaffolds in point of folding properties and adjustment. And to these ends the invention resides inproviding a scaffold with foldable feet or brackets and adjustable cleats or keepers for holding the cross bar.

Other objects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had to the accompanying drawings forming part hereof, in which:-

Figure 1 is a vertical section taken through a window frame showing mydevice in side elevation and in use. Fig. 2 is a tie tail horizontal section taken througha window frame showing the device in plan. Fig. 3 is a detail perspective of the foldable railing.

The side bars 5-5 may be of any material found suitable for the purpose as metal, and are of such lengths as will admit of the platform 6 which connects the bars together at their outer ends, required distance beyond the window 7.

The feet or brackets herein designated generally by a-a are by preference formed of metal and adapted to be folded parallel or substantially so, with the side bars 5-5.

Each bracket includes an upright portion 8 which has a bearing lug 9 resting upon the sill 10 and an inwardly turned toe 11 bearing on the wall 12, and a strut or brace 13 the ends of which are pivoted as indicated at 14-14, to the adjacent side bar and the upright portion 8. As viewed in Fig. 1 the upper end of each of the uprights 8 is mounted on a pivot 15 which slides in a slot 16 of the side bar, whereby, to admit of the folding of the upright and strut to the position shown by dotted lines in Fig. 1.

to be positioned for any Formed with or otherwise suitably connected to the uprights 8 are posts 17 over which) are passed the ends 18-18 of a railmg 19-19, sockets for the lower ends of which are provided in the platform 6, whereby to admit of setting up the railing as shown in Figs. 1 and 2. Since the several parts of the railing are pivoted to the posts 19, the railing may be folded to the position shown in Fig. 3 when not in use.

hen positioned as shown in Figs. 1 land 2, the scaffold is supported by a cross bar 20, which bears on the inner surface of the 1 Wall 12 and greater in length than the width of the window frame 7 this cross bar .co operating with cleats ranged upon the upper faces of the side bars and adjustable thereon. The cleats or keepers 21 have longitudinal slots 22-22 which receive screws 23 carried by the side bars, as shown in Figs. 1 and 2. These screws or keepers 21-21, ar- 1 This railing also includes posts 23-23 form one part of a clamp which in- 1 eludes the thumb nuts 21-24; which function as means for securing the cleats in anyof their adjusted positions, on the side bars 5-5., With this construction it will be obvious that the engaging ends of the keepers may be adjusted to variousdistances from the outer ends of the side bars, whereby to admit of adjusting the scaffold to the various depths of window frames.

That is claimed as new is:

A window scaffold comprising side bars, brackets pivotally and slidably mounted thereon, said brackets being provided a j with wall engaging, elements, posts provided upon the brackets at the opposite sides of said pivots, from the wall engaging elements, railings detachably engaging the posts and other posts withwhich the said railings are pivotally connected, the last mentioned posts being detachably engage- 1 able with the said side bars.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANK ANDERSON.

Witnesses:

C. JAMES GRONIN, G110. A. BYRNE.

Copies of thispatent may be obtained for five cents, each,

by addressing the Commissioner of .Patents,

Washington, D. G. 

